The Endress+Hauser Oxymax COS61D is a high-performance digital oxygen sensor utilizing fluorescence technology for fast, accurate, and drift-free measurement. The sensor's long-term stable fluorescence layer is exclusively oxygen-selective, ensuring interference-free measurements and consistently reliable results.

With measuring ranges of 0-20 mg/l, 0-200 %SAT, and 0-400 hPa, the COS61D supports your process with low maintenance, high availability, and easy handling. The integrated NTC 30K temperature sensor provides accurate temperature compensation.

Thanks to Memosens digital technology, the COS61D combines maximum process and data integrity, enabling simple lab calibration. The sensor requires no electrolyte handling, eliminating chemical maintenance. It is particularly well-suited for all aeration processes including SBR and Anamox applications.